Concrete-mixer



' J. (a. WYNN.

CONCRETE MIXER. APPLICATION FILED DEC. 20. I9I5.

Patented Mar. 1, 1921.

3 SHEETS-bnEET I fmefiinf JbhJ z/ G. m

flit J J. G. WYNN; CONCRETE MIXER. APPLICATION men DEC. 20, 191 ;s'"-.'

3 SHEETS-SHEET 2.

Patented Mar. 1,1921.

.J. G. WYNN. I

CONCRETE MIXER.

APPLICATION FILED DEC. 20, 1915.

1,3 9, 70, Patented Mar. 1,19 2 1 3 SHEETS-SHEET!- JOHN ewxnN, or MADISON, W scons n;

CONCRETE-MIXER.

Toallwho mz'tmag eonoern:

Be it knownthat 1, JOHN- G. WYNN, a citizen of the. United States, residing at Madison, in the county of Dane andState of Wisconsin, have invented a certain new and useful Improvement in Concrete-Mix ers, of which the following. is a full, clear, concise, and exact description, reference being had to the accompanying drawings,

forming apart of this specification.

My invention relates to concrete IIHXGI'S.

The object of my invention is to provide an inexpensiveand eliicient concrete mixer formixing small batches, of concrete.

It is often desirable to mix .small batches of concrete, as for instance inbuilding concrete silos for farm purposes. As the mixer is to be hauled from place to place, it is desirable that the same be made as light aspossible without sacrificing efliciency or re-' liability. 1

It is well-known that the strength and durability of concrete depends very greatly;

upon proper mixing Itis with a view to.

satisfying the. above condition that I have devised the present invention.

7 The accompanying drawings which 'form I a part of the present specificationillustratethe manner in which my invention may be carried out- 1 i' Y Figure 1 is a perspective view of a con,- crete mixer embodying my inventi0nthis view is taken from the left rear quarter;

Fig. 2 is a similar perspective of the same.

taken from the left front quarter showing the mixer in dumping position;

Fig. is a similar view showing the mixer in mixing position;

Fig. 4 is an elevational view showing the arrangement of the trunnion for'varying the mixing dial; J

Fig. 5 is a cross section of the clutch mechanism;

Fig. -6 is a perspective view showing a modification and Fig. 7 is ,a cross sectional view illustratingthe hoisting mechanism whlch' is used K in connection with the dumpin mechanism In building silos and in 0t er. building operations, it isoften necessaryto hoist the 7 Application filed December 20, 1915. ser al no. 7,696..

staunch and watertight construction. The- Specification of Letters Patent. 'PatentlMa l fi'l,i921.

l,' a hsiclerableliei iit ft r i i m xed. -To provide forsuch, use, I employ a Windlass connectible to the main driving: shaft. This isshownin Figs. 1 .a'nd'6 but has beenomitted for thesake of clearne'ss fromlfigs2and3ff I i V I The: 'xer comprises I prefer to consist of a wooden barrel ofinterior of the barrel l is provided with. a number of baflies-or mixing plates 2, one of}.

the barrel, 1,

which is shown clearly in Fig. 3. It 1s to be understoodthat a number of these baflies are employed and that they are ofsuch a character as .toproducelthorough and com,-'

plete mixture offthe concrete- The barrel 1 is supported in a yoke or U-shaped frame 3, which supports a bearing 4 at the bottom: Y thereof for receiving a stud shaft 5. which is a secured bymeans of the flangeti tolthe head of the barrel 7, which forms the bottom of the mixer. i x

,In the form shown in the front part of the barrel'issupported-bye! fiat link chain 8 which passes unden the body of thebarrel and is supported by a pair of sprockets?!) and 10, which are suit-- ably supportedby 'r'neansof the brackets 11" 5 I and 12. from a crossbar 13, which is joined] I and 15. These castings-are provided with?" to the: frame 3f by meansof the castings 14 trunnions 1-6 and-17 which are rotatable in suitable saddles 18 and -19; respectively.

Thesaddle 18, which is shown in Fig. 4f, comprises-apair oflugs 20 and 21, which are secured to suitable 1 corner posts 22 and 23,

which form a part of the framework upon which the structure is supported; Each of T I thesaddle castings 18 and 19, is provided with a yoke 24- extending; over the outer end of the trunnion 16 or 17 ,as'the case may'be.'

This is to prevent the trunnion leaving the saddle when thebarrelis tilted to discharge the concrete therefrom. The yoke casting 18 is secured to the angle iron corner posts 22-and 23 and the casting 19 issecured the corner .posts2-5 and 26. These posts 1 which are made of angleiron are secured toget-her by the braces 27 and 28 and :by the bearingshoes 29 and 80; These bearing upon the corner posts23- and 26 and is pro-g r of the sprocket. with acollar 44 (see Fig. 5) which is keyed that is found advantageous may. be em-.

ployed. A driving shaft 34 has bearings videdat one end with a pulley35 so that the same may be "driven byanengine or other suitable source of power. The opposite end of the shaft: 34 "is provided with a driving sprocket 36 which sprocket is'connected by means of the square linkchain 37 to the sprocketf38. .The'spr'ocket 38 is mounted loosely'onashaft 39 which passes through and has bearings in the trunnion member 16.

Upon the inner end of the shaft 39 a miter or bevel gear 40 is secured.

This gear meshes with a similar gear 41 "which is secured to'the sprocket 9 '(see Fig.

3) for driving, the chain 18 which rotates the barrel 1. A suitable idler 42, which is mounted upon the bracket '43 serves to keep the driving chain 38 sufficiently tight at all times to prevent thesame from jumping off The shaft 39 is provided thereto. The outer end ofthe shaft 39 is threaded and a' threaded hand wheel serves to clamp the driving sprocket 38 to the collar 44 to cause the shaft 39 to revolve and thus to transmit motion to the barrel 1 for mixing the concrete. The face of the hand wheel 45 is relieved, as shown at 46, to

reduce the contact between the two so as to reduce friction. between the hand wheel 45 and-the'sprocket wheel 38. A suitable lever 47 is secured to the frame 3 andthe cross bar 13 so that the barrel l ma-y be tilted up intothe position shown-in Fig.2 to dump the concrete therefrom; Anumber of small 7 V V A v 41 by means of a shaft 39 wh ch l1es on the clips or guides 48 are secured to the side of the barrel in such position that the chain 8 will run therethrough. This is to prevent thechain 8 from slipping downalong the side of the barrel in'case the same be raised accidentally.- The barrel 1 may be held in the tilted position by means of a notched arm 49 which coeperates with a pin 50 a mounted upon the framework. The arm 49 is pivotedat its inn-er end to the frame-,3.

54 is secured to a double faced cone member 56 by means of acollar 57 which is proside ofthe flaring part 65 of the casing 60, which casing 60 is held stationary by being secured to the corner post 23. The face, 63 is held in engagement with the flared portion '65 by means of thespring 66 so that when the operator releases the handle 59, the drum 52 will be held against movement. A" cooperating clutch member 67 is secured to the shaft 34 and when the hoistingdrurn 52 is to be driven, the operator throws'the ,cone' member 56 so that the face 64 will engage I the hollow member 67, thereby connecting the driving pulley 35 with the drum 52.

When the article which is to be hoisted, is

lowered, the operator merely releases the the stationary clutch member 65.

In the modification Which I have tratedin Fig. 6, the chain 8 which passes directly around the barrel and over the sprockets 9 and 10, is replaced by a round pressure between the cone member 56 and inns- I link chain 70 which passes under the barrel l and over a pair of sprockets 71 and 72 of the frame which support the barrel 1;

- The chain then passes over the corner pulleys 7 3 and 74, which are securedto the bot- 1 which are secured to the trunnion members.

respects, the modification shown in Fig.6 is

the same asthat shown. in the'other figures.

It will be noted in the' form of device 3 shown in Figs. 1, 2, and 3, that the driving chain Sis driven through the bevel gears 40,

axis of the trunnions 16 and 17 so that no driving connections are'not disengaged even though the barrel is tilted to any desired degree. i i

'shaft39 so th'atinfthis structure also" the In operatiomthe barrel is set with the open end tilted upwardand'is'so held. by

means of the adjusting rod'49'and the pin 50. The pulley 35 is driven bymeans'of a After the cement, "sand, gravel or the like, for a proper charge, are placed in the barrel 1, the hand wheel 45 is screwed'up belt from a gasolene engine or the like.

- tween the hand wheel and the .colar 44 thereby causing tlle shaft .35 to drive the chain 8 through the medium of the sprockets 36,38 .and the bevel gears 40, 4:1. 7 It is to be understood that the hoisting mechanism is normally out of gear. When the charge has been properly mixed, a wheel barrow is run into the open frame beneath the barrel 1' and the holding rod 49 is released and the barrel tilted down into the position shown in Fig. 2. The barrel isrotated in the meanwhile so that the entire contents are poured out into the wheelbarrow. V

The wheelbarrow is then withdrawn and the barrel again tilted upward to receive a fresh charge. Rotation of the barrel may be stopped by disengaging clutch 45, 38, 44 so that the sprocket wheel 38 idles on the shaft 39.

When it is desired to hoist a bucket full of concrete or a similar object, the same is attached to the cable 53 and the clutch controlling handle, 59 is moved downward'to throw the movable clutch member 56 into engagement with the driving member 67 to operate the hoisting drum 52. Release of the handle 59 allows the spring 66 towithdraw the clutch member 56 from engagement with the member 67 and to throw it into engagement with the stationary member 65 so that the article may be held in any position, or may be released and lowered by disengagement of the clutch member 56 from both of the cups 65 and 67.

It will be apparent from the above that I have provided a combination mixer and hoist of light but substantial constructlon, and of a special utility for light work.

I employ the term barrel to designate a cylindrical receptacle with one closed end and not as limiting myself to a wooden barrel.

It is apparent that changesand mod fications will suggest themselves to those skilled in the art and I desire that the same be construed as coming within the spirit and scope of the appended claims.

What I claim is:

1. In combination, a frame-work, an aux iliary frame pivotally mounted. on said frame-work, a barrel mounted on said auxiliary frame, a bearing on said auxiliary frame for the bottom of said barrel, a driving chain supporting one end of said barrel and having supporting means on said auxillary frame, and driving means mounted on said frame-work for rotating said barrel in said auxiliary frame. Y

2. In combination a U-shaped frame, a bar connecting the top of said frame,'bearings secured to said frame adjacent said cross bar, a barrel, a bearing for said barrel at the bottom of said U-shapedframe, and a driving chain passing under said barrel,

and. :over a pair of guiding pulle sprockets mounted adjacent to the top of. said U-shaped frame. a

3. xIn'combination, a mam frame, a driving .shaft mounted'on said main frame,'an auxiliary frame pivotally mountedto tilt on said main. frame, a barrel rotatably mounted insaidjtilting frame, mean'sxfor supporting the barrel in said auxiliary.

' saddles secured to said posts, an auxiliary frame having trunnions bearing in said saddles, said saddles having means for preventing dis-engagement of said trunnions with said saddles, a barrel rotatably mounted in said auxiliary frame, and a chain passing under said barrel and over a pair of pulleys or sprockets, said pulleys or sprockets being mounted on said auxiliary frame.

5. In combination, a main frame, a tilting frame pivoted on saidmain frame, a barrel rotatably mounted in said tilting frame, a chain passing under said barrel to support and drive the same below the pivotal mount;

ing of said auxiliary frame, supporting sprockets for said chain, said sprockets being mounted on said tilting frame, and

means mounted on said first mentioned frame for driving one of said sprockets and to cause rotation of the barrel regardless of the position of the auxiliary frame relative to the main frame.

6. In combination, a main frame, a tilting frame pivoted on said mainframe, means for holding said tilting frame in the desired position, a barrel having a closed end mounted in saidtilting frame, a bearing for the closed end of said barrel, means to rotate said barrel, saidmeans comprising a chain passing under the intermediate portion of the barrel to support the open end thereof,'and means to tilt said frame.

- 7. In combination, a main frame having bearings and a tilting frame operable in 8. In combination, a'main frame having" bearings, a t1lt1ng frame operable in saidbearings, a receptacle mounted for rotation on said t1lt1ng frame, a bearing in said tilting frame to support one end of the receptacle, and a flexible supporting and drivlng element disposed below the receptacle at 115 I said bearings, a rotatable mixing receptacle I the intermediate portion thereof to rotate the free end ofthe receptaele'and nrieans for and support the same. driving said'means from said main frame 10 9. In combination, a main frame, a tlltregardless of the angular position of said able frame having an axis on first said auxiliary framein said main frame.

\ frame, a rotatable mlxlng" receptacle car-' In witness whereof, I hereunto subscribe rie'd by the tiltable frame'and having a bearmy name this 2nd day 'of December A. Di ing in said tiltable frame below said axis, 1915. r i 1 Y flexible vsupporting and driving-means for I 'JOHN G. i 

